Why would a ballast melt?
Power Surges
The ballast on a fluorescent lamp is particularly sensitive to spikes in power, and even a short surge can heat up the ballast enough to break it.
What causes fluorescent lights to explode?
According to Pacific Lamp Supply Company, the most common reason that lightbulbs can explode is if the manufacturers don’t put enough insulation at the base of the bulb. This causes the base to melt, and the gas that is stored in the light bulb will leak out.
What is a tombstone on a fluorescent light?
Two wires attach to each socket on a fluorescent fixture to provide the electricity necessary to cause the gas inside of a fluorescent tube to glow. The sockets on fluorescent fixtures are shaped eerily like tombstones, so they are often referred to as such.
What is the most common reason for fluorescent lamp failure?
A dead fluorescent can be caused by lack of electrical power (tripped breaker or blown fuse), a dead or dying ballast, a dead starter or a dead bulb(s). Check for power first… then the starter (if applicable) and then the bulbs. When all else fails, the ballast should be replaced.
Is it normal for a ballast to get hot?
Ballasts usually run hot, about 140 degrees F, but if one is so hot that you can’t keep your hands on it, it is likely the culprit.
Can a bad ballast cause a fire?
As with any electrical situation where overheating is possible, a bad ballast can pose a fire danger. The overheated ballast could cause the plastic housing on the light itself to melt and, in the right conditions, flame up.
Can fluorescent lights cause fires?
Overheated fluorescent lights can cause fires! Overheating of the ballast could result in the following: Ignition of nearby combustible materials. Explosion of the ballast due to the generation of gases inside.
What does it mean if your light bulb exploded?
When the light bulb base doesn’t have proper insulation, the filament can overheat as the gas escapes the base, leading to a light bulb exploding. However, it’s worth noting that this is more common with cheap light bulbs. To avoid that, invest in some good-quality light bulbs and save yourself the trouble.
Can you get mercury poisoning from a broken light bulb?
Once broken, a compact fluorescent light bulb continuously releases mercury vapor into the air for weeks to months, and the total amount can exceed safe human exposure levels in a poorly ventilated room, according to a new study.
How can you tell if the ballast is bad?
If your fluorescent lighting is displaying any of the signs below, it could be a symptom of a bad ballast:
- Flickering. …
- Buzzing. …
- Delayed start. …
- Low output. …
- Inconsistent lighting levels. …
- Switch to an electronic ballast, keep lamp. …
- Switch to an electronic ballast, switch to a T8 fluorescent.
How long do fluorescent ballasts last?
12 to 15 years
According to the Certified Ballast Manufacturers Association, the average magnetic ballast lasts about 75,000 hours, or 12 to 15 years with normal use. The optimum economic life of a fluorescent lighting system with magnetic ballasts is usually about 15 years.
What happens when fluorescent ballast goes bad?
The ballast itself can go bad, which causes lights to flicker or even appear to be burnt out, when in fact they aren’t. They require maintenance and energy to power, on top of the power used to light the fluorescent bulb. They are a large part of the equation when using fluorescent lamps.
How do you check a ballast if it works?
One probe of the multimeter should touch the hot wire connections, while the other touches the neutral wire connections. If the ballast is good, an analog multimeter has a needle that will sweep to the right across the measuring scale. If the ballast is bad, then the needle won’t move.
How much does it cost to replace a ballast in a fluorescent light?
A replacement ballast costs about $10-25 depending on capacity and brand. The bite is that an electrician trip charge (which includes 30 or 60 minutes work) is going to be $75-150 probably – for about 5 minutes work on each light fixture.
How do I know if my fluorescent tubes are bad?
When bulbs age and have been used for a long time, brown spots will appear. If darkness begins to form at the ends of the tube, the bulb may be near its end. While they may still light, they are wearing out and will die soon.
When should fluorescent tubes be replaced?
Typical lamp life for a fluorescent bulb is about 20,000 hours, but this can degrade as a consequence of frequent switching (turning on and off). Burning life is extended if lamps remain on continuously for long periods of time.
Will LED bulbs work if ballast is bad?
Can LED lamps work off of existing ballasts? Yes, if they have an internal driver than can work off that ballast. Philips, for example, has designed a tube that is compatible with an existing electronic ballast.
Do fluorescent tubes dim with age?
Another reason you need more lumens is that a CFL will dim over time. It will lose 20 to 25 percent lumen power after 4,000 hours (40 percent of a CFL’s 10,000-hour-rated life). Incandescent bulbs also lose lumens, but the life of these bulbs is extremely short compared with that of CFLs.
How long do fluorescent bulbs last in storage?
The average lifespan of CFLs is approximately 8,000 hours, compared to the 25,000-hour lifetime of LEDs.
Do fluorescent lights get brighter over time?
Lumens is the measure of how bright a light is. Fluorescent bulbs significantly lose CRI and Lumens over time.
